During the twentieth century, special services repeatedly sent expeditions to the North in search of traces of Hyperborea. Expeditions were looking for Alatyr-stone - a diamond tablet with inscriptions of 147 letters of Slavic cryptography. According to legend, this crystal is able to capture the energy of sunlight, the radiation of the Cosmos, concentrate and enhance the thoughts of people, it could become the basis of the biological civilization of the future. For centuries, Magi, secret teachers and hermits cherished the oldest written tradition "Golden Chain." In the revived northern monastery, they find an unknown book of the prophet Abel, written in these ancient writings. The monk who found her mysteriously disappears with the book. The capital is alarmed by a series of mysterious murders. Crimes are committed by a monster who owns martial arts of antiquity. A young detective follows in the footsteps of a criminal, risking his life, discovers a secret network of black magicians closely associated with the special services.